用于restful和普通的Spring MVC ExceptionHandler

Question

@ControllerAdvice
public class MyExceptionHandler {

    @ExceptionHandler(Exception.class)
    public ModelAndView handleCustomException(Exception ex) {

        ModelAndView model = new ModelAndView("error");
        model.addObject("errMsg", ex.getMessage());
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        ex.printStackTrace(pw);
        sw.toString();
        model.addObject("errTrace", sw);
        return model;

    }

    @ExceptionHandler(Exception.class)
    @ResponseBody
    public String handleAjaxException(Exception ex) {
        JSONObject model = new JSONObject();
        model.put("status", "error");
        model.put("errMsg", ex.getMessage());
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        ex.printStackTrace(pw);
        sw.toString();
        model.put("errTrace", sw);

        return model.toString();
    }
}

这将给我一个错误，因为我不能使用@exceptionHandler（exception.class）两次。那么有什么解决办法呢？

Answer 1

请参见@controlleradvice的配置：http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/bind/annotation/controlleradvice.html

因此，您可以创建两个类（错误处理程序），并指定Annotations/basepackages/assignibaletypes

例如，对于REST(ajax)，对控制器使用@RESTController注释，可以处理如下错误：

@ControllerAdvice(annotations = RestController.class)
public class MyExceptionHandler {

    @ExceptionHandler(Exception.class)
    @ResponseBody
    public String handleAjaxException(Exception ex) {
        ...
    }
}

@ControllerAdvice(annotations = Controller.class)